I was taken to hospital yesterday. Dizziness, nauseas and a sense of vomiting. Couldn't stand the smell of food.They told me that it seems a stomach bug but most likely gastroenteritis. I didn't have a lose stomach, I have a headache but no fever. 24 hours later I have headache, feeling week, tired and sometimes my heart beats a bit fast (I have been diagnosed in the past with supraventricular echtopy).